39DL Ultrasonic Thickness Gauge SKU: 39dl The 39DL gauge works as a precision or corrosion thickness gauge for demanding applications. Integrated Wi-Fi®, Bluetooth®, USB, RS-232, and a removable microSD card. Scan for minimal thickness areas at a 2 times faster display update rate. Tackle multiple thickness applications with full line of dual and single element transducers. Contact U Streamline your ultrasonic thickness inspection process with one fast, connected, and reliable handheld gauge. The 39DL PLUS™ gauge works as a precision or corrosion thickness gauge for demanding applications. With world-class ultrasonic capability, fast scanning speeds up to a 60 Hz update rate, and fully integrated wireless connectivity, our flagship handheld thickness gauge delivers results you can trust in a seamless workflow. Connected: Integrated Wi-Fi®, Bluetooth®, USB, RS-232, and a removable microSD card* Fast: Scan for minimal thickness areas at a 2 times faster display update rate** Versatile: Tackle multiple thickness applications with our full line of dual and single element transducers